What exactly backend developers do ?
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Computers and Technology, 22.06.2019 21:00
Which of these is most responsible for differences between the twentieth century to the twenty-first century?
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Computers and Technology, 23.06.2019 02:00
Which software would you use to create a print design? a. illustrator b. audacity c. reaper d. dreamweaver
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Computers and Technology, 23.06.2019 10:00
Hey i just logged on and one of the moderators deleted a bunch of my answers to questions, even though the answers were right and the people it doesn't make sense but if anyone wants to talk about anything just message me lol (this is super random lol)
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Computers and Technology, 23.06.2019 10:20
Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?
Answers: 1
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